Active NPI
Helena M Horak, M.D.
- Emergency Medicine Physician
- West Hills, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Emergency Medicine Physician
- License
- A116821
- Practice address
- 7300 Medical Center Dr
West Hills, CA 91307-1902 - Phone
- (818) 676-4000
- NPI assigned
- Jun 10, 2009
- Last updated
- Jul 25, 2025
- Sex
- Female
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Emergency Medicine Physician | 207P00000X | A116821 | CA | Primary |
Addresses
Primary practice location
7300 Medical Center Dr
West Hills, CA 91307-1902
Mailing address
5767 W Century Blvd Ste 400
Los Angeles, CA 90045-5631
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Emergency Medicine
- Education
- Other, 2009
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
215 W Janss Rd
Thousand Oaks, CA 91360-1847
Phone (805) 497-2727
2975 Sycamore Dr
Simi Valley, CA 93065-1201
Phone (805) 955-6000
Hospital & facility affiliations
Merit-based Incentive Payment System (MIPS)
- Final score
- 80.21 of 100
- Quality
- 93.25
- Improvement activities
- 0
- Cost
- 79.74
Merit-based Incentive Payment System (MIPS)
- Final score
- 84.94 of 100
- Quality
- 73.38
- Improvement activities
- 40
- Cost
- 72.82
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A116821 | CA | MD | Emergency Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Allied Emergency Physicians, Inc. | Current | Accepting new patients | |
| Regents of the Univ of Ca Emer Med | Emergency Medicine | Current | Accepting new patients |
| Team Physicians of California Medical Group Inc | Emergency Medicine | Current | Accepting new patients |
| UCLA Medical Group | Emergency Medicine | Past | Accepting new patients |
Locations
5767 W Century Blvd
Ste 400
Los Angeles, CA 90045
Phone (310) 301-5200
File 55675
Los Angeles, CA 90074
1250 16th St
Santa Monica, CA 90404
Phone (310) 301-8695
2975 Sycamore Dr
Simi Valley, CA 93065
Phone (805) 522-2500
215 W Janss Rd
Thousand Oaks, CA 91360
Phone (805) 379-5435
15107 Vanowen St
Van Nuys, CA 91405
Phone (818) 782-6600
7300 Medical Ctr
West Hills, CA 91307
Phone (818) 612-8301
Interoperability endpoints
- hhorak38150@direct.uclahealth.org
Organizations & group practices 5
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Emergency Medical Services (Emergency Medicine) Physician
- Simi Valley, CA
- NPI 1043531346
-
- Emergency Medicine Physician
- Delano, CA
- NPI 1447288345
-
- Emergency Medicine Physician
- Simi Valley, CA
- NPI 1023773587
-
dba UC Regents UCLA Emegency Medicine Physicians Group
- Emergency Medicine Physician
- Los Angeles, CA
- NPI 1104889138
Hospital & facility affiliations 3
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Los Robles Hospital & Medical Center
- General Acute Care Hospital
- Thousand Oaks, CA
- NPI 1306890389
-
dba UCLA West Valley Medical Center
- General Acute Care Hospital
- West Hills, CA
- NPI 1801653969
-
- General Acute Care Hospital
- Simi Valley, CA
- NPI 1063495190
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1244592000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1753401600000",
"number": "1477789949",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5767 W CENTURY BLVD STE 400",
"city": "LOS ANGELES",
"state": "CA",
"postal_code": "900455631"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "7300 MEDICAL CENTER DR",
"city": "WEST HILLS",
"state": "CA",
"postal_code": "913071902",
"telephone_number": "818-676-4000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HORAK",
"first_name": "HELENA",
"middle_name": "M",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2009-06-10",
"last_updated": "2025-07-25",
"certification_date": "2025-07-25",
"status": "A"
},
"taxonomies": [
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "CA",
"license": "A116821",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
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- Mikaela Margaret Holland, MD
- Taylor Sene Holly, NP
- Wendy Katz Holtzman, RD, CDE
- Hospital Medicine of California Inc
- Hotait Dental Group PC
- House of Zen
- House of Zen Hartland LLC.
- Malihe Houshanian
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 25, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.